"Damn Yellow Composite." In wildflower identification, the Asteraceae family is so large (1100 genera and 20,000 species), that specific identification in the field can be so difficult as to not be worth it. You can figure out it's an asteraceae easily enough: most members are composite (they have both ray and disc flowers). You can usually identify the color, yellow, and the family, and that's it. (Unless you're lucky enough to have figured out you've got a sunflower)

Sometimes attributed to Lady Bird Johnson.